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10w30 was definitely the move #5431631 05/17/20 04:40 PM
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cwilliamsws6 Offline OP
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Just changed the oil in my CR-V and used the barn-find jug of Castrol 10w-30 I posted about a month or so back and my engine does not tick nearly as bad as it did and it just feels smoother overall.

Going to do a UOA at the end of this OCI and see what it says.

Just thought I'd share!


2007 Honda CR-V LX "The Linoleum Falcon" 215K miles
Castrol conv 10w30, Pyroil oil treatment 15oz, 7317 orange can
"Bad decisions make good stories."
Re: 10w30 was definitely the move [Re: cwilliamsws6] #5431696 05/17/20 05:31 PM
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dave1251 Offline
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What were you using before?


make the inside of your engine oil cap white.
don't use.
Re: 10w30 was definitely the move [Re: cwilliamsws6] #5431700 05/17/20 05:35 PM
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cwilliamsws6 Offline OP
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Harvest King 5W-20, STP blue bottle, Prime Guard POF4610 filter.

Although during that OCI I probably burned off at least 3 quarts and when I top off my oil I just use whatever the [censored] I have laying around.

So I couldn't really say exactly what I was running before lol


2007 Honda CR-V LX "The Linoleum Falcon" 215K miles
Castrol conv 10w30, Pyroil oil treatment 15oz, 7317 orange can
"Bad decisions make good stories."
Re: 10w30 was definitely the move [Re: cwilliamsws6] #5431818 05/17/20 08:06 PM
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IMSA_Racing_Fan Offline
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That's heresy in these parts popcorn


2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: 10w30 was definitely the move [Re: cwilliamsws6] #5431819 05/17/20 08:10 PM
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IMSA_Racing_Fan Offline
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I'll repeat one of my first post here;
0-W and 5-W oils are used by manufacturers to reduce oil system friction losses and reciprocating windage drag in order to achieve CAFE standards.
P E R I O D
The engines are designed to last the warranty period with these oils and no further.

Last edited by IMSA_Racing_Fan; 05/17/20 08:11 PM.

2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: 10w30 was definitely the move [Re: cwilliamsws6] #5431848 05/17/20 08:34 PM
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LubricatusObsess Offline
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And if they don't say the customer must use those viscosities in their O&M Manual, EPA can void their certification for meeting CAFE regulations.

The other thing of course is the VVT and MDS systems on these new engines using engine oil as a hydraulic actuating fluid. For these systems to work reliably in wide temperature ranges, the oil has to have enough flow rate to enable actuation. It must also not plug servo valve orifices, which is why they've gone to higher quality base stocks and antioxidant additives. Making money via "Dexos" and other certs is a bonus.


Elastohydrodynamic Lubrication makes the world go 'round!
2017 Ram 2500 - PUP 0W-40, Fram XG
2011 Chev Traverse - PUP 5W-30, Fram XG
2005 Chev Kodiak C5500 - PUP 10W-30, Fram XG
Re: 10w30 was definitely the move [Re: IMSA_Racing_Fan] #5431852 05/17/20 08:40 PM
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Virtus_Probi Offline
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Originally Posted by IMSA_Racing_Fan
I'll repeat one of my first post here;
0-W and 5-W oils are used by manufacturers to reduce oil system friction losses and reciprocating windage drag in order to achieve CAFE standards.
P E R I O D
The engines are designed to last the warranty period with these oils and no further.

Posts the guy who lives in Houston, where it has likely never been below 0F.
I'm feeling kind of dumb for buying 10W30 for my "summer" change as I have not been driving much since I put 5W30 in sometime in March and I will probably not want to change my oil until at least fall...I could probably just get by with 10W30 around my house (especially with a garage) over the winter, but I would not take a chance on ski weekends in the Whites with that oil in my sump as I cannot plug in at my condo. This is assuming the ski resorts actually open up later this year...man, I hope they do.


2014 Forester XT, 114800 miles
Last Change;
Valvoline AFS 5W30
Tokyo Roki 15208AA170 oil filter
Subaru 16546AA10A air filter
Re: 10w30 was definitely the move [Re: IMSA_Racing_Fan] #5431860 05/17/20 08:48 PM
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PimTac Offline
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Originally Posted by IMSA_Racing_Fan
I'll repeat one of my first post here;
0-W and 5-W oils are used by manufacturers to reduce oil system friction losses and reciprocating windage drag in order to achieve CAFE standards.
P E R I O D
The engines are designed to last the warranty period with these oils and no further.




And the W stands for what?


2017 Mazda CX5
Mobil 1 Annual Protection 0w20
Roki OEM filter.
Re: 10w30 was definitely the move [Re: cwilliamsws6] #5431881 05/17/20 09:11 PM
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IMSA_Racing_Fan Offline
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At 215k miles enough wear has taken place to move up or you're running a 0W in practice with a 5W.u
Refer to OP's testament.

Last edited by IMSA_Racing_Fan; 05/17/20 09:12 PM.

2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: 10w30 was definitely the move [Re: cwilliamsws6] #5431939 05/17/20 10:35 PM
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cwilliamsws6 Offline OP
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Yeah I'm not worried about it. My car runs fine on the thicker oil and isn't throwing any codes


2007 Honda CR-V LX "The Linoleum Falcon" 215K miles
Castrol conv 10w30, Pyroil oil treatment 15oz, 7317 orange can
"Bad decisions make good stories."
Re: 10w30 was definitely the move [Re: Virtus_Probi] #5431990 05/18/20 01:40 AM
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IMSA_Racing_Fan Offline
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You know you could just say "freezing temperatures", your condo at the ski resort is rather not important.


2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: 10w30 was definitely the move [Re: Virtus_Probi] #5431998 05/18/20 02:30 AM
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4WD Offline
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Personally I’m happy with a nationwide 0w20 spec on two of mine. It’s driving the use of better base stock … and keeping the results data set more accurate.
Any thoughts to come up a grade will happen after warranty anyway.

Re: 10w30 was definitely the move [Re: LubricatusObsess] #5432017 05/18/20 04:55 AM
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wemay Offline
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Originally Posted by LubricatusObsess
And if they don't say the customer must use those viscosities in their O&M Manual, EPA can void their certification for meeting CAFE regulations.


Do you have link to this information?


19 VW Passat Wolfsburg TSI: Castrol Edge Pro LL IV Fe 0W20 + VW oil filter
13 Hyundai Santa Fe Sport 2.0T: Shell Rotella Gas Truck 5W30 + H/K oil filter
Re: 10w30 was definitely the move [Re: IMSA_Racing_Fan] #5432019 05/18/20 05:00 AM
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Lubener Offline
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Originally Posted by IMSA_Racing_Fan
I'll repeat one of my first post here;
0-W and 5-W oils are used by manufacturers to reduce oil system friction losses and reciprocating windage drag in order to achieve CAFE standards.
P E R I O D
The engines are designed to last the warranty period with these oils and no further.

and they self distruct after the warranty period? Tell that to the many who have gone several hundred thousand past the warranty period with 5W-20. Your comment is pure hogwash.


The "thinking" man's friend.
Re: 10w30 was definitely the move [Re: cwilliamsws6] #5432077 05/18/20 06:51 AM
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aquariuscsm Offline
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I use PPHM 10W30 in mine. Same engine as your CR-V. Had a flawless uoa. Zero wear metals. Excellent gas mileage. I too think the 10W30 runs smoother. The TSX with the same engine speeds 5W30.


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum High Mileage 10W30

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